[PATCH 6/8] camellia-gfni-avx512: speed up for round key broadcasting
Jussi Kivilinna
jussi.kivilinna at iki.fi
Wed Feb 22 20:29:22 CET 2023
* cipher/camellia-gfni-avx512-amd64.S (roundsm64, fls64): Use
'vpbroadcastb' for loading round key.
--
Benchmark on AMD Ryzen 9 7900X (turbo-freq off):
Before:
CAMELLIA128 | nanosecs/byte mebibytes/sec cycles/byte auto Mhz
ECB enc | 0.173 ns/B 5514 MiB/s 0.813 c/B 4700
ECB dec | 0.176 ns/B 5432 MiB/s 0.825 c/B 4700
After (~13% faster):
CAMELLIA128 | nanosecs/byte mebibytes/sec cycles/byte auto Mhz
ECB enc | 0.152 ns/B 6267 MiB/s 0.715 c/B 4700
ECB dec | 0.155 ns/B 6170 MiB/s 0.726 c/B 4700
Signed-off-by: Jussi Kivilinna <jussi.kivilinna at iki.fi>
---
cipher/camellia-gfni-avx512-amd64.S | 88 ++++++++++-------------------
1 file changed, 31 insertions(+), 57 deletions(-)
diff --git a/cipher/camellia-gfni-avx512-amd64.S b/cipher/camellia-gfni-avx512-amd64.S
index c62b7848..b676379f 100644
--- a/cipher/camellia-gfni-avx512-amd64.S
+++ b/cipher/camellia-gfni-avx512-amd64.S
@@ -1,6 +1,6 @@
/* camellia-gfni-avx512-amd64.S - GFNI/AVX512 implementation of Camellia
*
- * Copyright (C) 2022 Jussi Kivilinna <jussi.kivilinna at iki.fi>
+ * Copyright (C) 2022-2023 Jussi Kivilinna <jussi.kivilinna at iki.fi>
*
* This file is part of Libgcrypt.
*
@@ -175,8 +175,6 @@
vpbroadcastq .Lpost_filter_bitmatrix_s14 rRIP, t4; \
vpbroadcastq .Lpost_filter_bitmatrix_s2 rRIP, t3; \
vpbroadcastq .Lpost_filter_bitmatrix_s3 rRIP, t6; \
- vpxor t7##_x, t7##_x, t7##_x; \
- vpbroadcastq key, t0; /* higher 64-bit duplicate ignored */ \
\
/* prefilter sboxes */ \
vgf2p8affineqb $(pre_filter_constant_s1234), t5, x0, x0; \
@@ -202,10 +200,8 @@
vgf2p8affineinvqb $(post_filter_constant_s2), t3, x1, x1; \
vgf2p8affineinvqb $(post_filter_constant_s2), t3, x4, x4; \
\
- vpsrldq $1, t0, t1; \
- vpsrldq $2, t0, t2; \
- vpshufb t7, t1, t1; \
- vpsrldq $3, t0, t3; \
+ vpbroadcastb 7+key, t7; \
+ vpbroadcastb 6+key, t6; \
\
/* P-function */ \
vpxorq x5, x0, x0; \
@@ -213,26 +209,25 @@
vpxorq x7, x2, x2; \
vpxorq x4, x3, x3; \
\
- vpshufb t7, t2, t2; \
- vpsrldq $4, t0, t4; \
- vpshufb t7, t3, t3; \
- vpsrldq $5, t0, t5; \
- vpshufb t7, t4, t4; \
+ vpbroadcastb 5+key, t5; \
+ vpbroadcastb 4+key, t4; \
\
vpxorq x2, x4, x4; \
vpxorq x3, x5, x5; \
vpxorq x0, x6, x6; \
vpxorq x1, x7, x7; \
\
- vpsrldq $6, t0, t6; \
- vpshufb t7, t5, t5; \
- vpshufb t7, t6, t6; \
+ vpbroadcastb 3+key, t3; \
+ vpbroadcastb 2+key, t2; \
\
vpxorq x7, x0, x0; \
vpxorq x4, x1, x1; \
vpxorq x5, x2, x2; \
vpxorq x6, x3, x3; \
\
+ vpbroadcastb 1+key, t1; \
+ vpbroadcastb 0+key, t0; \
+ \
vpxorq x3, x4, x4; \
vpxorq x0, x5, x5; \
vpxorq x1, x6, x6; \
@@ -240,13 +235,8 @@
\
/* Add key material and result to CD (x becomes new CD) */ \
\
- vpternlogq $0x96, mem_cd##_5, t6, x1; \
- \
- vpsrldq $7, t0, t6; \
- vpshufb t7, t0, t0; \
- vpshufb t7, t6, t7; \
- \
vpternlogq $0x96, mem_cd##_4, t7, x0; \
+ vpternlogq $0x96, mem_cd##_5, t6, x1; \
vpternlogq $0x96, mem_cd##_6, t5, x2; \
vpternlogq $0x96, mem_cd##_7, t4, x3; \
vpternlogq $0x96, mem_cd##_0, t3, x4; \
@@ -348,16 +338,12 @@
* t0 &= ll; \
* lr ^= rol32(t0, 1); \
*/ \
- vpbroadcastd kll, t0; /* only lowest 32-bit used */ \
vpbroadcastq .Lbyte_ones rRIP, tmp; \
- vpxor tt3##_x, tt3##_x, tt3##_x; \
- vpshufb tt3, t0, t3; \
- vpsrldq $1, t0, t0; \
- vpshufb tt3, t0, t2; \
- vpsrldq $1, t0, t0; \
- vpshufb tt3, t0, t1; \
- vpsrldq $1, t0, t0; \
- vpshufb tt3, t0, t0; \
+ vpxor tt3##_y, tt3##_y, tt3##_y; \
+ vpbroadcastb 0+kll, t3; \
+ vpbroadcastb 1+kll, t2; \
+ vpbroadcastb 2+kll, t1; \
+ vpbroadcastb 3+kll, t0; \
\
vpandq l0, t0, t0; \
vpandq l1, t1, t1; \
@@ -367,7 +353,6 @@
rol32_1_64(t3, t2, t1, t0, tt0, tt1, tt2, tt3, tmp); \
\
vpternlogq $0x96, tt2, t0, l4; \
- vpbroadcastd krr, t0; /* only lowest 32-bit used */ \
vmovdqu64 l4, l##_4; \
vpternlogq $0x96, tt1, t1, l5; \
vmovdqu64 l5, l##_5; \
@@ -375,7 +360,7 @@
vmovdqu64 l6, l##_6; \
vpternlogq $0x96, tt3, t3, l7; \
vmovdqu64 l7, l##_7; \
- vpxor tt3##_x, tt3##_x, tt3##_x; \
+ vpxor tt3##_y, tt3##_y, tt3##_y; \
\
/* \
* t2 = krr; \
@@ -383,16 +368,12 @@
* rl ^= t2; \
*/ \
\
- vpshufb tt3, t0, t3; \
- vpsrldq $1, t0, t0; \
- vpshufb tt3, t0, t2; \
- vpsrldq $1, t0, t0; \
- vpshufb tt3, t0, t1; \
- vpsrldq $1, t0, t0; \
- vpshufb tt3, t0, t0; \
+ vpbroadcastb 0+krr, t3; \
+ vpbroadcastb 1+krr, t2; \
+ vpbroadcastb 2+krr, t1; \
+ vpbroadcastb 3+krr, t0; \
\
vpternlogq $0x1e, r##_4, t0, r##_0; \
- vpbroadcastd krl, t0; /* only lowest 32-bit used */ \
vpternlogq $0x1e, r##_5, t1, r##_1; \
vpternlogq $0x1e, r##_6, t2, r##_2; \
vpternlogq $0x1e, r##_7, t3, r##_3; \
@@ -402,13 +383,10 @@
* t2 &= rl; \
* rr ^= rol32(t2, 1); \
*/ \
- vpshufb tt3, t0, t3; \
- vpsrldq $1, t0, t0; \
- vpshufb tt3, t0, t2; \
- vpsrldq $1, t0, t0; \
- vpshufb tt3, t0, t1; \
- vpsrldq $1, t0, t0; \
- vpshufb tt3, t0, t0; \
+ vpbroadcastb 0+krl, t3; \
+ vpbroadcastb 1+krl, t2; \
+ vpbroadcastb 2+krl, t1; \
+ vpbroadcastb 3+krl, t0; \
\
vpandq r##_0, t0, t0; \
vpandq r##_1, t1, t1; \
@@ -418,11 +396,10 @@
rol32_1_64(t3, t2, t1, t0, tt0, tt1, tt2, tt3, tmp); \
\
vpternlogq $0x96, tt2, t0, r##_4; \
- vpbroadcastd klr, t0; /* only lowest 32-bit used */ \
vpternlogq $0x96, tt1, t1, r##_5; \
vpternlogq $0x96, tt0, t2, r##_6; \
vpternlogq $0x96, tt3, t3, r##_7; \
- vpxor tt3##_x, tt3##_x, tt3##_x; \
+ vpxor tt3##_y, tt3##_y, tt3##_y; \
\
/* \
* t0 = klr; \
@@ -430,13 +407,10 @@
* ll ^= t0; \
*/ \
\
- vpshufb tt3, t0, t3; \
- vpsrldq $1, t0, t0; \
- vpshufb tt3, t0, t2; \
- vpsrldq $1, t0, t0; \
- vpshufb tt3, t0, t1; \
- vpsrldq $1, t0, t0; \
- vpshufb tt3, t0, t0; \
+ vpbroadcastb 0+klr, t3; \
+ vpbroadcastb 1+klr, t2; \
+ vpbroadcastb 2+klr, t1; \
+ vpbroadcastb 3+klr, t0; \
\
vpternlogq $0x1e, l4, t0, l0; \
vmovdqu64 l0, l##_0; \
@@ -623,7 +597,7 @@ ELF(.type _gcry_camellia_gfni_avx512__constants, at object;)
.byte 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0
.Lbyte_ones:
- .byte 1, 1, 1, 1, 1, 1, 1, 1
+ .quad 0x0101010101010101
/* Pre-filters and post-filters bit-matrixes for Camellia sboxes s1, s2, s3
* and s4.
--
2.37.2
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